Idempotents of Hecke algebras of type A


Aiston, AK and Morton, HR ORCID: 0000-0002-8524-2695 (1998) Idempotents of Hecke algebras of type A Journal of Knot Theory and Its Ramifications, 7 (4). pp. 463-487. ISSN 0218-2165, 1793-6527

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Abstract

We use a skein-theoretic version of the Hecke algebras of type A to present three-dimensional diagrammatic views of Gyoja's idempotent elements, based closely on the corresponding Young diagram λ. In this context we give straightforward calculations for the eigenvalues f<inf>λ</inf> and m<inf>λ</inf> of two natural central elements in the Hecke algebras, namely the full curl and the sum of the Murphy operators. We discuss their calculation also in terms of the framing factor associated to the appropriate irreducible representation of the quantum group, SU(N)<inf>q</inf>.

Item Type: Article
Additional Information: 27 pages LaTeX2e, 21 figures. The statements of theorem 4.1 and corollary 4.2 have been corrected, and a proof has been added. We thank Sachin Valera for pointing out the mistake in the original statement of theorem 4.1 . At the same time some of the references have been updated
Uncontrolled Keywords: Hecke algebras, skein theory, quantum groups, representations
Depositing User: Symplectic Admin
Date Deposited: 08 Feb 2019 08:44
Last Modified: 01 Mar 2026 10:17
DOI: 10.1142/S0218216598000243
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3032461
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